Legal claims defining the scope of protection, as filed with the USPTO.
1. An image forming device comprising: an input adapted to couple with an external power source; electrical circuitry configured to provide images; a first power supply coupled with the input and configured to supply electricity from the input to the electrical circuitry; and a second power supply coupled with the input and configured to supply electricity from the input to the electrical circuitry; wherein the electrical circuitry includes logic circuitry, and the electrical circuitry is configured to selectively control the supply of electricity from the first power supply and the second power supply to the logic circuitry, wherein the electrical circuitry configured to control only one of the first power supply and the second power supply to supply the electricity to the electrical circuitry at any given moment in time.
2. The device according to claim 1 wherein the first power supply comprises a high power converter and the second power supply comprises a low power converter.
3. The device according to claim 1 wherein the image forming device is configured to operate in a power save mode and the electrical circuitry is configured to control the first power supply and the second power supply to supply electricity only from the second power supply during operation in the power save mode.
4. The device according to claim 1 wherein the electrical circuitry includes imaging circuitry, and the first power supply is coupled to supply electricity to the imaging circuitry and the logic circuitry during a normal operational mode, and the second power supply is coupled to supply electricity to the logic circuitry during a power save mode.
5. The device according to claim 1 wherein the electrical circuitry is configured to control the first power supply to supply electricity to the logic circuitry during a normal operational mode and to control the second power supply to supply electricity to the logic circuitry during a power save mode of operation.
6. The device according to claim 1 wherein the electrical circuitry includes a print engine configured to print images upon media.
7. An image forming method comprising: providing an image forming device including electrical circuitry; forming an image using the electrical circuitry; receiving electricity from an external power source within the image forming device; supplying the electricity to logic circuitry of the electrical circuitry using a first power supply and a second power supply; and selectively controlling the supplying via the first power supply and the second power supply, wherein the controlling comprises controlling to supply electricity using only one of the first power supply and the second power supply at any given moment in time.
8. The method according to claim 7 wherein the supplying comprises supplying using the first power supply and the second power supply respectively comprising a high power converter and a low power converter.
9. The method according to claim 7 further comprising selectively operating the image forming device in a power save mode and wherein the supplying comprises supplying using only the second power supply during the operating in the power save mode.
10. The method according to claim 7 wherein the supplying comprises supplying to the logic circuitry and to the imaging circuitry of the electrical circuitry using the first power supply during a normal operational mode, and supplying to logic circuitry of the electrical circuitry using the second power supply during a power save mode.
11. The method according to claim 7 further wherein the controlling comprises controlling the first power supply to supply electricity to the logic circuitry during a normal operational mode and controlling the second power supply to supply electricity during a power save mode of operation.
12. The method according to claim 7 wherein the forming comprises printing images upon media.
13. A method of supplying power to an image forming device comprising: providing an image forming device having electrical circuitry configured to provide images, an input adapted to couple with an external power source, and a first power supply and a second power supply individually coupled with the input and the electrical circuitry; operating the image forming device in a plurality of operational modes; first supplying electricity to logic circuitry of the electrical circuitry using only the first power supply during operating in one of the operational modes; and second supplying electricity to the logic circuitry of the electrical circuitry using only the second power supply during operating in another of the operational modes.
14. The method according to claim 13 wherein the supplyings comprise supplyings using the first power supply and the second power supply respectively comprising a high power converter and a low power converter.
15. The method according to claim 13 wherein the first supplying comprises supplying during operating within a normal operational mode, and the second supplying comprises supplying during operating within a power save mode.
16. The method according to claim 13 wherein the first supplying comprises supplying to imaging circuitry and the logical circuitry of the electrical circuitry, and the second supplying comprises only supplying to the logic circuitry.
17. The method according to claim 13 further comprising controlling the supplyings responsive to the operating.
18. The method according to claim 13 wherein the providing comprises providing an image forming device having a print engine.
Complete technical specification and implementation details from the patent document.
DETAILED DESCRIPTION OF THE INVENTION
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Unknown
January 30, 2001
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